I was able to generate snippets for most of the chapters in the book, amazingly enough. The latter chapters aren’t present, but these were specific to launch screens and publishing apps and the like, which don’t lend themselves well to snippets in the first place. Otherwise, out of twelve chapters, nine have some representation in the interactive snippet environment.
In a way, the environment is a lot like JSBin or similar, although your changes aren’t saved anywhere. It’s just for experimentation purposes. You can also use it to get a feel for ES6 and Sassy CSS as well, which feature heavily in the book. There is a version distributed in the code package for the book that runs locally, but for those who didn’t want to worry about that, I wanted to have an online environment available as well.
Enjoy, and if you do run into any problems, let me know.